POISONOUS METALS ON SPRAYED FRUITS AND VEGETABLES. 27 
Some of the samples from New Jersey reported in Table 11 represent 
plots which were purposely oversprayed and contain relatively large 
amounts of spray residues. The lots sprayed according to recom- 
mended schedule contain much less spray residue. Samples 27340 
and 27349 show a comparatively large amount of spray residue, but 
these samples are from experimental plots which were sprayed late. 
The other Massachusetts samples show very little spray residue. 
The results indicate that when sprayed with the regulation spray and 
washed before using the berries contain but little spray material. 
Table 12.— Copper, lead, and arsenic remaining on sprayed grapes at picking time. 
Sam- 
ple 
No. 
23565 i 
23566 i 
23567 i 
23571 1 
235721 
23573 i 
23574 
Spray material used. 
1915. 
1\ lbs. lead arsenate June 4, Julv 
(powder), 4-4-50 Bor- 16. 
deaux.* 
1 lb. lead arsenate do 
(powder), 4-4-50 Bor- 
deaux. 2 
Check plat (unsprayed) 2 
Check plat (unsprayed) 
3 lbs. lead arsenate 
(paste), 2 lbs. fish-oil 
soap, 3-3-50 Bor- 
deaux (sprayed with 
coarse nozzle), 
lbs. lead arsenate 
(paste), 1 lb. laundry 
soap, 3-3-50 Bor- 
deaux (sprayed with 
coarse nozzle). 4 
lbs. lead arsenate 
(paste), 2 lbs. fish-oil 
soap, 3-3-50 Bor- 
deaux (sprayed with 
coarse nozzle), 
lbs. lead arsenate 
(paste), 1 lb. laundry 
soap, 3-3-50 Bor- 
deaux (sprayed with 
coarse nozzle). 4 
lbs. lead arsenate 
(paste), 2 lbs. fish-oil 
soap, 3-3-50 Bor- 
deaux (oversprayed, 
coarse nozzle). 
5 lbs. lead arsenate 
(paste), 1 lb. laundry 
soap, 3-3-50 Bor- 
deaux (oversprayed, 
coarse nozzle). 4 
lbs. lead arsenate 
(paste), 3-3-50 Bor- 
deaux (sprayed with 
trailers, using fine 
nozzles). 5 
lbs. lead arsenate 
(paste), 1 lb. laundry 
soap, 3-3-50 Bor- 
deaux (sprayed with 
trailers, using fine 
nozzles) (normal 
schedule for this re- 
gion). 5 
1 Concord. 
1 Harvested Oct. 9, 1915, Benton Harbor, Mich. 
1 Samples washed in running tap water. 
4 Harvested Oct. 9, 1915, North East, Pa. 
* Harvested Oct. 27, 1915, North East, Pa. 
23688 : 
Date 
sprayed. 
July 6. 
July 19. 
July 6. 
July 19. 
July 6. 
July 19. 
July 5, 17. 
do. 
Condition 
of samples 
analyzed. 
Unwashed 
Washed 3 . 
Unwashed 
Washed 3 . . 
Unwashed 
Washed 3 . 
Unwashed 
Washed 3 . 
Unwashed 
Washed 3 . 
Unwashed 
Washed 3 . 
Unwashed 
Washed 3 . . 
Arsenic 
(As). 
Grig 
mal r frn , t 
fruit. flult • 
Dried 
Lead (Pb). 
*3f SS d 
fruit. frmt - 
Copper 
(Cu). 
Orig- 
inal 
fruit. 
Dried 
fruit. 
0.25 
p 
1.50 
.80 
irts pe 
2.6 
2.4 
' millic 
15.1 
14.0 
7?. 
0.8 
.6 
.80 
.80 
2.1 
1.3 
13.1 
8.1 
.7 
.6 
.40 
.40 
2.70 
1.80 
1.1 
.6 
1.4 
1.2 
6.8 
3.2 
8.4 
7.2 
.4 
.4 
1.3 
1.1 
4.80 
2.10 
2.4 
1.3 
14.4 
7.8 
1.5 
1.1 
4.70 
2.10 
8.2 
2.4 
48.5 
14.2 
1.8 
1.4 
1.90 
1.90 
1.5 
1.2 
7.1 
5.7 
1.2 
.7 
3.90 
2.40 
2.4 
1.4 
11.5 
6.7 
1.8 
1.2 
4.7 
3.4 
4.4 
3.8 
2.5 
2.1 
7.8 
0. 
6. 6 
10.7 
8.3 
5,7 
3.3 
8.7 
5.8 
Loss 
on 
dry- 
ing. 
P.ct. 
82.8 
84.0 
83.3 
83.1 
79.0 
